gecko-dev/netwerk/base/public/nsIStreamLoader.idl
bzbarsky%mit.edu 0ce72c77cd Make nsIStreamLoader and nsIUnicharStreamLoader be stream listeners. Bug
281153, patch by Son Le <son.le0@gmail.com>, r=biesi, sr=darin
2006-10-24 21:47:40 +00:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* the Initial Developer. All Rights Reserved.
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*
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#include "nsIStreamListener.idl"
interface nsIRequest;
interface nsIStreamLoader;
[scriptable, uuid(359F7990-D4E9-11d3-A1A5-0050041CAF44)]
interface nsIStreamLoaderObserver : nsISupports
{
/**
* Called when the entire stream has been loaded.
*
* @param loader the stream loader that loaded the stream.
* @param ctxt the context parameter of the underlying channel
* @param status the status of the underlying channel
* @param resultLength the length of the data loaded
* @param result the data
*
* This method will always be called asynchronously by the
* nsIStreamLoader involved, on the thread that called the
* loader's init() method.
*/
void onStreamComplete(in nsIStreamLoader loader,
in nsISupports ctxt,
in nsresult status,
in unsigned long resultLength,
[const,array,size_is(resultLength)] in octet result);
};
/**
* Asynchronously loads a channel into a memory buffer.
*
* To use this interface, first call init() with a nsIStreamLoaderObserver
* that will be notified when the data has been loaded. Then call asyncOpen()
* on the channel with the nsIStreamLoader as the listener. The context
* argument in the asyncOpen() call will be passed to the onStreamComplete()
* callback.
*
* XXX define behaviour for sizes >4 GB
*/
[scriptable, uuid(8ea7e890-8211-11d9-8bde-f66bad1e3f3a)]
interface nsIStreamLoader : nsIStreamListener
{
/**
* Initialize this stream loader, and start loading the data.
*
* @param aObserver
* An observer that will be notified when the data is complete.
*/
void init(in nsIStreamLoaderObserver aObserver);
/**
* Gets the number of bytes read so far.
*/
readonly attribute unsigned long numBytesRead;
/**
* Gets the request that loaded this file.
* null after the request has finished loading.
*/
readonly attribute nsIRequest request;
};